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3 years ago

PLEASE HELPPPP MEEEE NOWWWW!

Mathematics

1 answer:

Ket [755]3 years ago

6 0

Answer:

2, 6, and 7

Step-by-step explanation:

3n is by itself because theres no other numbers that have the letter n.

6m and -11m are like terms bcs they both have the letter m (variable)

-3 and -18 are both like terms bcs they are both just numbers (or constants whatever)

so you would choose options 2, 6, and 7! hope this helps! :)

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According to a "how to stop bullying" Web site, 15% of students report experiencing bullying one to three times within the most

AlekseyPX

Answer:

His 95% confidence interval is (0.065, 0.155).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

$n = 186, \pi = 0.11$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.11 - 1.96\sqrt{\frac{0.11*0.89}{186}} = 0.065$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.11 + 1.96\sqrt{\frac{0.11*0.89}{186}} = 0.155$

His 95% confidence interval is (0.065, 0.155).

4 0

3 years ago

PLEASE HELP

Aloiza [94]

Volume=2.7million km^3
Base=339milliom km^2

$\\ \tt\longmapsto Volume=Base\times Height$

$\\ \tt\longmapsto Height=\dfrac{Volume}{Base}$

$\\ \tt\longmapsto Height=\dfrac{2.9km^3}{339km^2}$

$\\ \tt\longmapsto Height=0.00079km$

$\\ \tt\longmapsto Height=7.9m$

7 0

3 years ago

Assume that all angles are right angles. 60in,20in,20in,10in and 20 in

Fofino [41]

The answer is 1000 square inches.

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3 years ago

Find the measure of angle ABC

victus00 [196]

First we need to find x so 6x+8x+6x= 180
20x=180 and x= 9

So A= 6*9= 54
B= 8*9= 72
C= 6*9= 54

5 0

3 years ago

What is the slope of the line?

Katyanochek1 [597]

Answer:

Step-by-step explanation:

slope (k) is the rise over run of the line

a way of finding the slope if you have two dots of the line is:

$k \: = \frac{y2 - y2}{x2 - x2}$

here the dots that belong to the line that you can most easily see are:

A(-6,0)

B(0,6)

by inserting the values into the euquation you get:

$\frac{6 - 0}{0 - ( - 6)} = \frac{6}{6} = 1$

good luck with your maths solving

6 0

2 years ago